baber/WOPTO huggingface dataset:
Patent CA-2046141-C (CA)
Title: Phosphor composition and x-ray intensifying screen capable of emitting principally in the spectral region of native silver halide sensitivity
Inventor: LAMBERT PATRICK MADDOCK
IPC: C09K11/67
Filed: 1991-07-03
Granted: 1996-01-30
Abstract: A phosphor composition is disclosed containing a titanium activated hafnium zirconium germanate phosphor which emits electromagnetic radiation principally in the spectral region to which silver halide exhibits native sensitivity.  To maximize the intensity of emission the ratio of host metals satisfies the relationship:                        D1+xGe1-x where D is the combined sum of zirconium and hafnium and x is 0.25 to -0.70. An X-ray intensifying screen is disclosed containing the phosphor composition.
Patent CA-2047943-C (CA)
Title: Leucocyte depleting filter device and method of use
Inventor: GSELL THOMAS C
IPC: A61M1/18
Filed: 1991-07-26
Granted: 2001-01-02
Abstract: Leucocyte depletion filter assemblies decrease the leucocyte content of a leucocyte-containing liquid at a flow rate of greater than 25 milliliters per minute. These filter assemblies are suitable for use in an extracorporeal circuit. Methods for removing leucocytes and other deleterious matter are also disclosed.
Patent CA-2048028-C (CA)
Title: Protective helmet with protective facepiece connection and adjustment provision
Inventor: ALMQVIST HANS O
IPC: A42B3/04
Filed: 1991-07-29
Granted: 1994-12-13
Abstract: The present invention discloses, in combination a protective helmet including an outer shell and a separate deformable inner impact shell mounted removably to the interior of the outer shell; a protective facepiece; and mounting means for mounting the facepiece removably to the separate deformable inner impact shell, and operable by the wearer of the helmet to force the facepiece into sealing engagement with the face of the wearer of the helmet; the mounting means are adjustable mounting means operable by the wearer to adjust the force with which the facepiece is forced into sealing engagement with the face of the wearer of the helmet; the protective helmet further includes a cradle of straps of webbing for engaging the head of the wearer of the helmet. The adjustable mounting means include: (i) first mounting means for mounting the cradle of straps of webbing removably to the inner impact shell and internally thereof, (ii) second mounting means mounted removably to the inner impact shell by the first mounting means, and (iii) adjustable interconnecting means for interconnecting the facepiece to the second mounting means operable by the wearer to force the facepiece into sealing engagement with the face of the wearer with adjustable force.
Patent CA-2049646-C (CA)
Inventor: AGRAWAL RAKESH
IPC: F25J3/04
Filed: 1991-08-21
Granted: 1993-04-13
Abstract: ABSTRACT The present invention relates to an improvement for the production of argon from cryogenic air separation processes.  In particular, the improvement provides a better method of thermally linking the top of the crude argon column with the low pressure column.  In the improvement, the argon-rich, overhead vapor from the top of the crude argon column is condensed in a boiler/condenser by indirect heat exchange against liquid descending the low pressure column; a portion of the condensed argon-rich, overhead vapor is returned to the top of the crude argon column to provide reflux.  The most suitable location for such boiler/condenser is as an intermediate boiler/condenser in the low pressure column, particularly, the section of the low pressure column bounded by the feed point of the crude liquid oxygen from the bottom of the high pressure column and the vapor feed draw line for the crude argon column wherein an adequate temperature difference exists between the descending liquid and the condensing argon.
Patent CA-2056837-C (CA)
Inventor: PRONOVOST NORMAND
IPC: E01H5/08
Filed: 1991-12-03
Granted: 1998-02-17
Abstract: L'invention se rapporte à une paire de patins pour chasse-neige avec souffleuse monté à l'avant d'un véhicule et destinés à préserver l'intégrité structurelle du véhicule engagé dans le déneigement de routes fortement bombées sans incidence négative sur le fonctionnement du chasse-neige utilisé dans le dégagement de bancs de neige de forte hauteur. Les patins sont montés vers l'arrière des parois latérales du godet avec un léger déport vers l'intérieur par rapport à la verticale des parois latérales, et plus avant que le bord d'attaque du plancher du godet intérieur. La position de chaque patin fait l'objet d'un réglage dans l'axe horizontal, avant et arrière, ainsi qu'en hauteur.
Patent CA-2057310-C (CA)
Title: Switching power source
Inventor: MIYAZAWA SHIGEO
IPC: H02M1/34
Filed: 1991-12-09
Granted: 1997-10-28
Abstract: A resonant type switching power source implementing zero voltage switching on the basis of the resonance between an inductor and a capacitor. A main switch is connected to the primary side of a main transformer.   A pulse width control circuit generates a control signal for varying the turn-on time of the main switch until the output voltage of the secondary side of the tranformer being fed back reaches a predetermined value.  A resonance capacitor is connected in parallel with the main witch. When the terminal voltage of the capacitor crosses zero potential toward the negative side, the pulse width control circuit delivers an ON command to the main switch. Alternatively, the ON control over the main switch may begin at a time a predetermined period of time later than the time for turning on the resonant circuit.
Patent CA-2059091-C (CA)
Inventor: OHMORI TAKASHI
IPC: B41M5/00
Filed: 1992-01-09
Granted: 2000-05-30
Abstract: This invention relates to a recording sheet for an ink jet printer comprising fibrous base material and a back-coating layer formed on the back surface of the base material, which characterized by that the base material contains a cationic polymer size (a), and the back-coating layer comprises a pigment, a binder and two or more of sizes (b1) and (b2), said size (b1) being alkyl ketene dimer, alkenyl succinic anhydride, or wax emulsion, and said size (b2) being a cationic polymer.
Patent CA-2061602-C (CA)
Inventor: MASE SHOJI
IPC: G02B1/11
Filed: 1992-02-20
Granted: 2000-10-17
Abstract: A process for producing a plastic lens, which comprises; (1) applying a primer coating composition composed mainly from a blocked polyisocyanate and a polyol onto a surface of a plastic lens substrate and heating the primer coating composition to form a primer layer of a thermoset polyurethane, the blocked polyisocyanate being a polyisocyanate blocked with a .beta.-diketone, (2) forming a hard coating layer on the primer layer, and (3) vapor-depositing an inorganic material or inorganic materials on the hard coating layer to form a single-layered or multi-layered anti-reflection coating.
Patent CA-2067942-C (CA)
Title: Emission/fuel control device
Inventor: HANNAH KEITH
IPC: F02M31/10
Filed: 1992-05-04
Granted: 1996-07-16
Abstract: Accordingly, the invention comprises a fuel temperature control  device for use with an internal combustion  engine, having   a  system  for  circulating   engine   coolant;   a carburetor;  and  means  for supplying fuel  under  pressure to  the carburetor.   The device includes a heating  chamber having an inlet and an outlet,  through which engine coolant may pass.   A coil of copper tubing including at least three concentric  right-hand  wound coils is  located  within  the chamber  to extend substantially the  length  thereof.   The coil  of  tubing having an inlet end entering  said  chamber adjacent the coolant outlet,  and an outlet end exiting said chamber  adjacent the coolant inlet such that in  use,  fuel under  pressure is passed through the coil  of  tubing,  and hence through the chamber in a direction opposite to that of the flow of coolant from the engine.
Patent CA-2075424-C (CA)
Title: Vacuum cleaner headlight
Inventor: LAWRENCE RANDALL K
IPC: A47L9/30
Filed: 1992-08-06
Granted: 1997-09-30
Abstract: A vacuum cleaner headlight system incorporating a light pipe is provided. The light pipe includes reflex optics to control the distribution of light across the width of the output edge of the light pipe, as well as to prevent light from escaping through the sides of the light pipe. A reflex optical reflector is also part of the system, for reflecting light from a light bulb into the light pipe without requiring a metallized mirror.
Patent CA-2079205-C (CA)
Inventor: TURLEY EVA ANNE
IPC: A61P9/10
Filed: 1992-09-25
Granted: 1998-02-10
Abstract: For the prevention of the narrowing of the tubular walls of an animal after the tubular walls have been traumatized, the administration of a therapeutically effective non-toxic amount of hyaluronic acid and/or salts thereof and/or homologues, analogues, derivatives, complexes, esters, fragments, and subunits of hyaluronic acid to the animal to prevent narrowing of the tubular walls.
Patent CA-2080390-C (CA)
Inventor: LAITINEN JYRKI
IPC: G01L5/00
Filed: 1992-10-13
Granted: 1997-03-18
Abstract: The invention concerns a method and a device for measurement of the nip force and/or nip pressure in a nip (N) formed by a revolving roll or a band used in the manufacture of paper.  In the method and in the device, a series of measurement detectors (20l ...20n) is used, whose detectors (20) are placed a-cross a considerable width of the paper web (W) in the transverse direction of the revolving roll (10) or the band.  The measurement signals received from the different detectors (20) are passed to a switching unit (23), whose connectors (24l...24n) are con-trolled so that, through the switching unit (23), the signal of each measurement detector (20l...20n) is alternatingly connected to a telemeter transmitter (26) placed in connection with the revolving roll (10).  By means of the telemeter transmitter (26), the series of measurement signals (Vin l...Vin n) are trans-mitted wirelessly to a stationary telemeter receiver (27) placed outside the revolving roll (10).
Patent CA-2082056-C (CA)
Title: An electrically variable current limiting reactor for precipitators
Inventor: JOHNSTON DAVID FULTON
IPC: B03C3/68
Filed: 1991-03-14
Granted: 1996-09-10
Abstract: An electrically variable current limiting reactor (24) which is usable in association with a power supply (14-22) for an elec-trostatic precipitator (10, 58) is disclosed herein.  The current limiting reactor (24) is capable of having the inductance value there-of varied responsive to system operation conditions.  Most particularly the inductance of the current limiting reactor (24) can be modified responsive to the form factor of the sinusoidal AC input current to the power supply transformer.  Additionally, the in-ductance of the current limiting reactor (24) can be controlled responsive to the fractional conduction of the full wave rectified current waveform at the output of the full wave rectifier of the power supply. Other conditions can be monitored to control the inductance value of the current limiting reactor (24) such as physical system parameters.  An automatic operating control may modify the inductance of the current limiting reactor responsive to the current entering the primary of the transformer of the pow-er supply.
Patent CA-2083793-C (CA)
Title: Antenna operating mechanism for a portable radio communication apparatus
Inventor: NAGAI MICHIO
IPC: H04B1/38
Filed: 1992-11-25
Granted: 1997-04-22
Abstract: An antenna handling mechanism incorporated in a portable radio communication apparatus includes an antenna which can be pulled out of the casing of the apparatus.  When the antenna is received in the casing, the lower end thereof is locked by a latch mechanism disposed in the casing.  In this condition, as the tip of the antenna is pressed, the latch mechanism unlocks the lower end of the antenna and, at the same time, pushes the antenna out of the top of the casing. When the antenna is pressed into the casing and reaches a predetermined position, the latch mechanism again locks the lower end of the antenna.
Patent CA-2084597-C (CA)
Title: Security printed documents
Inventor: ANDERSON MARK
IPC: G03G21/04
Filed: 1992-12-04
Granted: 2002-09-10
Abstract: The invention provides a document designed to prevent reproduction by xerographic copying comprising a sub-strate (12) printed with a background printing (20) over a substantial portion of its surface, the background printing comprising a first printed pattern, first warning printed matter (21) located within the first pattern and second warning printed matter (22) located within the first warning printed matter. The first pattern is formed from a plurality of parallel lines extending in a first direction spaced from one another with a first spacing and having a first size, the first warning printed matter having a second size different from the first size, one of the first and second sizes being such that is readily copyable by a copier and the other being such that it will not copy with the same clarity as the one, such that on a copy the warning printed matter will be clearly distin-guishable. The second warning printed matter is formed from parallel lines extending at an angle of at least 20° to the direction of the lines of the background, and preferably having substantially the same spacing as the lines of the background.      All of the printing has a density less than 50% and preferably less than 20% and arranged in a pattern such that it appears to the eye that there are areas of printing (14) interspersed with blank areas (15) in a distinct pattern, the arrangement being such that the areas containing the first and second warning printed matter are substantially indistinguishable from the overall pattern when viewed by the human eye.
Patent CA-2089099-C (CA)
Title: Broad beam flux density control
Inventor: MCINTYRE EDWARD KIRBY JR
IPC: H01J37/08
Filed: 1993-02-09
Granted: 2000-01-11
Abstract: An ion beam source (10). The source includes multiple apertures (31) bounded in close proximity by an extraction electrode (34) for extracting positively charged ions from the source, Ions exiting the source combine downstream to form a broad beam (14) which, in one utilization of the invention, is used for ion beam treatment of a silicon wafer.  Individual electrodes (40) in close proximity to the extraction electrode can be biased to either inhibit or allow backstreaming of neutralizing electrons from beam portions close to the source back to the extraction electrode. This allows the beam portion to become deneutralized and, therefore, unstable. The unstable beam is diminished in intensity since positively charged ions within that beam portion exit the beam. An isolation plate (50) separates beam portions in close proximity to the extraction electrode to inhibit beam crosstalk and an additional suppression electrode (70) common to all beam portions is controllably biased to further enhance control over beam portion intensity. In a typical application, the beam is a circular beam and intensity control is maintained to assure common intensity for a given radii from the beam center.
Patent CA-2094580-C (CA)
Inventor: BLASZYNSKI ROBERT H
IPC: B23P6/00
Filed: 1993-04-21
Granted: 1995-03-28
Abstract: The invention relates to a machine having a driven gear, service access to which is partially obstructed. An aspect of the invention involves an aperture permitting access to the driven gear through a spatial area away from the obstructed region.  The driven gear includes a plurality of arc-like segments mounted on a spider for removal individually and the dimensions of at least one segment and the aperture are cooperatively selected to permit a segment to be removed through the aperture to the spatial area.  Segments of the driven gear may thereby be removed for service while yet avoiding removal of the driving gear or other substantial disassembly.  A method for replacing the driven gear includes forming the aperture, detaching a segment and removing the segment through the aperture to the spatial area.
Patent CA-2096799-C (CA)
Title: Laser with longitudinal mode selection
Inventor: HUBER DAVID R
IPC: H04B10/43
Filed: 1993-05-21
Granted: 2001-08-14
Abstract: A laser is fabricated from an optical transmission medium having a laser cavity with an rare earth (e. g. Erbium) doped portion. At least one longitudinal. mode is suppressed using a plurality of series coupled Fabry-Perot cavities, an optical grating, or a combination thereof. Ring lasers, Sagnac cavity lasers, Fox-Smith cavity lasers, and linear structures are disclosed.
Patent CA-2107188-C (CA)
Inventor: OBARA RIKURO
IPC: F16C33/62
Filed: 1993-09-28
Granted: 2001-11-20
Abstract: Balls 3 provided between an outer and an inner ring 1 and 2 are made of high carbon chromium bearing steel.      Depending on actual operating conditions, at least one of the outer and inner rings that require corrosion resistance and stable bonding strength is made of martensitic stainless steel with a hardness of HRC 58 or above and an eutectic carbide diameter of 10 µ m or below, thus improving the quietness and rust prevention property.
Patent CA-2108259-C (CA)
Title: Process of screening plasma samples for effective antibody titers against respiratory viruses
Inventor: SIBER GEORGE R
IPC: A61K39/395
Filed: 1992-04-10
Granted: 2003-12-09
Abstract: A process for identifying plasma samples containing effective antibody titers for the treatment and/or prophylaxis of in-fections caused by a respiratory virus. The process comprises contacting a plasma sample containing antibodies against a respira-tory virus with the respiratory virus. The mixture of plasma sample and virus is then contacted with a plurality of cells. The re-maining non-neutralized virus in the sample is then determined through an immunoassay following replication of the virus in the cells. Plasma samples which, at a preselected minimum antibody titer value, prevent viral replication in the cells, are then select-ed. Plasma from which the selected samples were derived are then pooled to provide an immunoglobulin preparation having in-creased effectiveness in the prophylaxis and/or treatment of infections caused by the respiratory virus.
Patent CA-2110579-C (CA)
Title: High productivity process for the production of maleic anhydride
Inventor: EBNER JERRY RUDOLPH
IPC: B01J27/198
Filed: 1992-07-02
Granted: 2005-06-21
Abstract: An improved process for the manufacture of maleic anhydride by catalytic oxidation of a nonaromatic hydrocarbon hav-ing at least four carbon atoms in a straight chain, in which a gas containing oxygen and hydrocarbon is passed through a fixed catalyst bed in a tubular reactor. The activity of the catalyst bed is graded in such manner that the reactor can be operated at an initial;(feed gas) hydrocarbon concentration of over 1.5 % by volume, an integrated average temperature difference between gas and cooling fluid of at least about 15 °C over that portion of the bed in which the gas temperature exceeds the cooling fluid tem-perature, and a productivity of at least about 5.0 Ibs. maleic anhydride per hour, without the temperature difference between the gas and the cooling fluid exceeding 80 °C at any point in the catalyst bed during the course of the reaction. Preferably, the catal-yst activity and the gas permeability of the bed vary in the direction of gas flow so that both the catalyst activity and the pressure drop per unit distance are lower in a critical region, where the combination of temperature and hydrocarbon concentration could otherwise cause the reaction to proceed at an excessive rate, than they are in a region of low temperature and low hydrocarbon concetration. Significant and unexpected improvement in reactor performance is achieved by the combination of a graded catal-yst charge and incorporation of a catalyst modifying organophosphorus compound in the hydrocarbon feed.
Patent CA-2113560-C (CA)
Inventor: SHASHA BARUCH S
IPC: A01N25/26
Filed: 1992-07-14
Granted: 1999-04-20
Abstract: The present invention relates to methods and compositions for encapsulating biologically active agents in starch-based adherent granules.  Simple and economic methods have been developed to prepare said adherent granules. Compositions and characteristics of the granules are disclosed, including their capability for sustained release of pest control agents.  These methods and compositions are useful in controlling insects and other species of pests having chewing mouth parts and amylase digestive enzymes.
Patent CA-2115300-C (CA)
Inventor: STERLING MICHAEL
IPC: A61B17/06
Filed: 1994-02-09
Granted: 2006-05-02
Abstract: A direct dispensing, surgical suture package is disclosed. The package comprises a first rectangular panel 1 and a second rectangular panel 2. The second panel is foldably connected to a short side of the first rectangular panel. The package also comprises a first rectangular flap 3 which is foldably connected to a long side of the first rectangular panel. Further, the package comprises a second rectangular flap 4. The second flap is foldably connected to a long side of the second rectangular panel. The package further comprises means for accessing a surgical needle between the second rectangular panel and flap. The package is useful for dispensing a suture from it without having to open, tear or mutilate any of the panels or flaps.
Patent CA-2115705-C (CA)
Inventor: REBEYROLLE MICHEL
IPC: B32B27/32
Filed: 1994-02-15
Granted: 1998-08-11
Abstract: The subject of the invention is a storage and dispensing (distribution) tube (C) for a product, for example a water-containing product which may be flavoured or perfumed, comprising a dispensing head which is fixed onto a flexible multilayer skirt, this skirt essentially containing an intermediate polymer layer (20) which has a barrier effect with respect to oxygen and flavours or perfumes, the said layer being sensitive to humidity, as well as, on each face of this intermediate layer, one or more polymer layers (1; 12,14,10) based on polyolefins, all of the said layers being bonded together in a continuous manner, characterised in that the set of layers situated on the inner face of the said intermediate layer having a barrier effect (1,21) has a total thickness of between 40 and 150 micrometres, so as better to conserve the flavour or the perfume which is or may be contained therein. This tube preferably includes one or two means which render the dispensing of the contained product easier and more complete. It applies to the industries for packaging products which are, for example, liquid, creamy or pasty. <IMAGE>
Patent CA-2116977-C (CA)
Title: Process for recovering and causing highly viscous petroleum products to flow
Inventor: DI LULLO ALBERTO
IPC: C09K23/52
Filed: 1993-07-03
Granted: 2004-01-27
Abstract: Process for recovering and causing highly viscous petroleum products to flow by means of an aqueous dispersion of the petroleum product, in which the dispersant is selected from alkali metal or ammonium salts of organic sulfonates having the following properties: (A) sulfur content of at least 10%; (B) water solubility at 20 °C of at least 15% by weight; (C) decrease in water surface tension, at a concentration of 1% by weight, not higher than 10%.